Rough-ring-testing appliance.



c. E. JOHNSON.

ROUGH RING TESTING APPLIANCE.

APPLICATION FILED )AN.22, I916.

Patented Nov. 7, 1916.

co., WAl-HINSTON, n. cy

rinrrun sra rns rarnnr canton.

cHARLEs E. JoHNson', or ivrusnneon, MICHIGAN.

ROUGH-RING-TESTING AlPPLIANCE.

Application filed January 22, 1916.

To all whom it may concern:

' Be it known that 1, CHARLES E. J onnson, a citizen of the UnitedStates of America, residing at Muskegon, in the county of Muskegon andState ofv Michigan; have iIivented certain new and useful Improvementsin Rough-Ring-Testing Appliances; and 'I do hereby declare the followingto be a full, clearrand exact description. of the invention, such aswillv enable others skilled in the art to which it appertains to makeand; use the same. i

This invention relates to an appliance to he used in testing thethickness of rough ring. castings from which piston rings are to beproduced." In thein'anufacture of piston rings, individual castings; onefor each ring are made which, when taken from. the sand have a surfaceappearance like that of any other iron casting, there being projectipnsof metal, a rough and uneven surface, and the like. The first operationis to rough grind these ring castings on their outer surfape and this isaccomplished by bringing the ring into contact with a revolving grinder,so that the" outer rough skin is wholly or'partly removed from thering.-

Thishowever, does not make the. thickness of thef ring uniform asapproximately the same amount of material is taken from every part ofthe outer surface of the ring. Befiqt ny hihs urt er an he on n theoperation of making piston rings it is necessary to test the roughground ring for thickness; and if any ring is too thick at any part ofit Circumference it must be returned whe this h ke ed p rtihngrou d waybefore further operation'on the ring. Previously, it has been customaryto take each ringfcasting and place it between t e aws f a ometer g sh tr n th ring iw en t ja s a if t passed, betwee them it could be. furtheroperated upon; Wh le i por ihns said ring i no pass such parts weremarked and turned back for grinding at such marked portions. This procesf te ng ring i ve y l at a h Same im v ry d h ltac ve i. th a e.

p lily invention has for its primary object e proy siq 9f, a m anism n hh h rl a ity 9 ngs may e e t d. a he h m? me e we n s pa te mem e e h fwhich members. when it has once become woirimhji be akeh' r m t e e cehd Specification of Letters Patent.

member 7 it Patented Nov. 7, 15916.

Serial No. 73,606.

either ground to proper form or replaced by new parts, such parts beingof comparatively inexpensive manufacture.

It is also an object 'and purpose of my nvention to provide mechanismfor adjust mg one of the parts relative to the other byineans ofmicrometer construction such that the distance between the parts may begaged to thousandths of an inch if desired.

Various other objects and purposes not here enumerated, including manynovel details of construction \vill'loe apparent as understanding is hadof the embodiment shown in the accompanying drawing, in which:

Figure 1. is a front elevation of the ap pliance. Fig. 2 is a sideelevation thereof.

Like; reference characters refer to like parts throughout the severalviews of the drawing.

In the construction of the appliance there is provided an upright 1having a base 2 which may be secured in any suitable manner to a benchor other rigid supporting construction. From the front face of theupright support at a distance above the base a cylindrical rod 3extends, and above it is mounted a jaw 4 having its under face parallelto the axis and upper surface of the rod. pin 5 is threaded into andfixed to the jaw passing through a vertical slot 6 in the upright 1,there being provided a member 7 having a hub 8 which is interiorlythreaded to engage with the screw threaded outer end 9 of the pin. Awasher 8 is interposed between the hub 8 and the support 1 and it willbe apparent that by suitably operating the member 7 the member at may beclamped in fixed position with respect to the upright 1 or that byloosening said V may be freed for movement with respect to the upright.

A plate 10 is secured at the upper end of upright 1 by screws or othersuitable connections and passing therethrough is a member 11 providedbetween its ends with a circular enlargement 12 which seats in adepression on the underside of the plate. Both ends of the member 11 ateach side of part 12 arescrew threaded, the lower end threading into asleeve 13 which enters into an opening in an upward extension let to themember 61. Sleeve 13 is fixed with respect to the part 14 after it hasbeen threaded to place by a pin '15 passed through the extension andentering grooves or notches on the interior of the extension andexterior of the sleeve.

Above the plate 10 a collar 16 is secured on the upper part of themember 11 and directly above the collar is a lock nut 17 above thiscoming an operating head 18 which is interiorly bored and threaded toreceive the upper end of the member 11. Parts 16, 17 and 18 are threadedto position on the member 11 and then the lock nut 17 and the head 18are screwed down against the collar 16 looking all the parts againstmovement on member 11. Around the collar 16 is located a sleeve 19through which a set screw 20 passes, its inner end seating in an annulargroove made in the collar 16. The lower part of the sleeve 19 is formedinto a disk 21 having inclined sides on which appear graduations,twenty-five in number, to complete the circle of the disk. The threadsto the inch in the lower end of member 11 are forty in number. This isthe way I have constructed the device though it is to be understood thatvarious other numbers of threads to the inch and numbers of graduationson the disk 21 may be used quite as well. A nut 22 is threaded on theupper end of sleeve 13 which is tapered and longitudinally cut at itsupper end for the purpose of locking member 11 against movement withrespect to sleeve 13 after it is once set in proper position.

In operation the upper jaw 4 is brought into contact with the rod 3 andthe sleeve 19 and disk 21 are adjusted so that the zero mark on the diskis directly opposite a mark upon the plate 10 which may be used toindicate the starting point for separation of the parts 3 and 4. Toelevate the jaw 1 nut 22 is first loosened and the operating member 18is then grasped and turned so that the screw 11 is threaded into thesleeve 13. -With each revolution of the screw one-fortieth of an inch orwhat amounts to twentythousandths of an inch will be the additionalseparation of parts 3 and 4: as there are forty threads to an inch onthe lower part of screw 11 as previously described and by turning thedevice a suflicient number of times jaw 4 may be raised above rod 3 anydesired amount or what must be the limit within which rings of a certaincharacter must pass. On account of the graduations on the disk 21 thisdistance may be adjusted to thousandths of an inch as will be apparent.After the rod 3 and jaw 4: have been separated the required amount thedevice is in condition for use. In use a plurality of rings after theyhave been rough ground, are placed upon rod 3 as shown in Figs. 1 and 2and are turned about their centers over this rod. Those that pass freelybetween jaw 4 and the rod 3 are passed for further operation while thosewhich bind between said upper member 4 and rod 3 at any point are markedat such points and are returned for further grinding at such points.

From the foregoing it will be apparent that a large number of rings maybe tested very rapidly with this appliance. In fact in practical use,one man can test with this appliance what five or more could test withthe previous micrometer method of testing. It will also be noted thatthe rod 3 when it becomes worn by the passage of rings. over it can beremoved and reinserted to change its position so as to present theproper cylindrical surface at its upper side and that after it hasbecome worn on all sides sufficient to render it useless in the machineit may be removed and replaced by another. Furthermore the upper member4: is easily removed from the mechanism and if it becomes worn on itsunderside may be ground again to a proper surface for use or if itlinallyreaches a stage where it cannot be further used it can bereplaced by another.

This device in actual practice has proven to be of great utility andvalue.

Many changes in minor detail of construction may be resorted to withoutdeparting from the invention and accordingly I do not wish to be limitedother than is necessitated by the terms of the claimswhich define theinvention.

I claim 1. In combination, a support having a ver- 7 tical slot therein,a rod projecting from the support, a jaw located adjacent the rod withthe adjacent surfaces of the rod and jaw positioned parallel to eachother, means to move the jaw on the support a measured distance, a pinattached to the jaw and extending through said slot in the support, anda member having an interiorly threaded hub threaded onto the end of thepin to effect the clamping of the jaw to the support, sub stantially asdescribed.

2. In combination, an upright support, a rod having a curved uppersurface projecting therefrom a distance above the base of j the support,a jaw located above the rod with its underside parallel to the uppersurface of the rod, a vertical extension to the jaw positioned adjacentand parallel to the support, a plate attached to the upper end of thesupport and extending over said extension, a screw threaded membermounted on the plate and connecting with said extension whereby rotationof the member will raise or lower the jaw, and means for clamping thejaw at any desired position of adjustment thereof.

3. In combination, an upright support, a rod extending in substantiallyhorizontal position from the support, a jaw having its under surfaceparallel with the upper surface of the rod mounted above said rod, means10 which said lower end of the member proectS, a collar attached to themember above the plate, a sleeve adj ustably mounted on the collar, adisk provided with radial graduations on the sleeve, and an operatinghead attached to the member above said collar and sleeve.

In testimony whereof I aflix my signature.

CHARLES E. JOHNSON.

Witnesses:

GEORGE D. VANDERWERP, CHRIS SOHRIER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

